Fresh analysis indicates that people who come off popular weight-loss injections like Mounjaro or Wegovy tend to recover lost weight far faster than those who halt conventional lifestyle programs.
Research printed in a major medical journal shows that while overweight individuals frequently drop a large proportion of their total mass while undergoing treatment, the mass comes back at an average rate of 0.8 kg per month once they quit.
"People purchasing such medications must be informed of the potential of rapid weight regain when the treatment concludes," cautioned researcher Dr. Susan Jebb.
This pace of recovery means a reversion to starting mass in about 18 months.
Analyzing Approaches
The research, which looked at 37 of studies involving over 9,000 of patients, compared the outcomes of these new drugs with older methods.
The team emphasize that people who lose weight through lifestyle changes alone usually experience a more gradual weight regain—around 0.1 kg a month—once they finish.
Explaining the Rapid Rebound
Doctors believe the way of the injections explains the heightened weight return.
GLP-1 drugs copy a natural hormone called GLP-1, which helps regulate feelings of fullness.
"Long-term administration of GLP-1 concentrations several times higher than the body's typical production could lead to the system to produce less of its own natural GLP-1, and may also lessen responsiveness to its actions," said Dr. Adam Collins, a nutrition researcher.
"Withdrawal of this medication results in appetite is uncontrolled, making excessive eating a significant risk."
An Ongoing Condition?
The NHS advise the jabs for people with weight-linked health risks, alongside prescribed lifestyle changes.
Many experts say that, considering the high risk of weight regain, the treatment should be considered life-long.
This view is reinforced by pharmaceutical companies, who state that the results "highlight the long-term nature of excess weight," similar to managing conditions like diabetes.
User Experiences
Users who have stopped the jabs describe a intense resurgence of hunger.
"I experienced a switch flipping and you become extremely hungry," said a patient.
The struggle is compounded if individuals have not adopted sustainable lifestyle or habit changes during treatment.
Widespread Interest
Survey data show that a significant number of people in the UK have used these injections in the past year, with demand continuing to grow.
- Adoption is greater among females than men.
- The 40s and 50s age group shows the greatest usage rates.
- A large proportion access the medications through private prescriptions rather than the NHS.
Ultimately, experts caution that while the jabs are powerful agents for weight loss, they are not a standalone solution and long-term success relies on combined behavioural support.
